(19)

(11)

EP 2 815 001 A1

(12)

(43) Date of publication: 24.12.2014 Bulletin 2014/52 (21) Application number: 13703594.5 (22) Date of filing: 11.02.2013

(51) International Patent Classification (IPC):  C23F 11/04(2006.01) C23G 1/08(2006.01) C09K 8/54(2006.01) C23F 11/14(2006.01) C11D 3/33(2006.01) C09K 8/74(2006.01) (86) International application number: PCT/EP2013/052687 (87) International publication number: WO 2013/120806 (22.08.2013 Gazette 2013/34)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 13.02.2012 US 201261597950 P 28.02.2012 EP 12157218 (71) Applicant: Akzo Nobel Chemicals International B.V. 3811 MH Amersfoort (NL)	(72) Inventors: DE WOLF, Cornelia Adriana NL-6961 PC Eerbeek (NL) BOUWMAN, Albertus Jacobus Maria NL-6923 PL Groessen (NL) NASR-EL-DIN, Hisham College Station, Texas 77845 (US) (74) Representative: Akzo Nobel IP Department  Velperweg 76 6824 BM Arnhem 6824 BM Arnhem (NL)